Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11121003 | Method of predicting thermal donor formation behavior in silicon wafer, method of evaluating silicon wafer, and method of producing silicon wafer | Kazuhisa Torigoe, Toshiaki Ono | 2021-09-14 |
| 11094557 | Silicon wafer | Toshiaki Ono | 2021-08-17 |
| 10177008 | Silicon wafer and method for manufacturing the same | Takashi Nakayama, Takeo Katoh, Kazumi Tanabe | 2019-01-08 |
| 9412622 | Epitaxial silicon wafer and method for manufacturing same | Toshiaki Ono | 2016-08-09 |
| 8771415 | Method of manufacturing silicon single crystal, silicon single crystal ingot, and silicon wafer | Keiichiro HIRAKI, Hiroaki Taguchi | 2014-07-08 |
| 8617311 | Silicon single crystal wafer for IGBT and method for manufacturing silicon single crystal wafer for IGBT | Toshiaki Ono, Wataru Sugimura, Masataka Hourai | 2013-12-31 |
| 8460463 | Silicon wafer and method for producing the same | Manabu Nishimoto, Masataka Hourai | 2013-06-11 |
| 8231852 | Silicon wafer and method for producing the same | Wataru Itou, Takashi Nakayama, Hiroaki Taguchi, Yasuo Koike | 2012-07-31 |
| 8105436 | Single crystal silicon wafer for insulated gate bipolar transistors and process for producing the same | — | 2012-01-31 |
| 7846252 | Silicon wafer for IGBT and method for producing same | Yasuhiro Oura, Koji Kato | 2010-12-07 |
| 7629054 | Single crystal silicon wafer for insulated gate bipolar transistors | — | 2009-12-08 |
| 7563319 | Manufacturing method of silicon wafer | Masataka Hourai, Masakazu Sano, Shinichiro Miki | 2009-07-21 |
| 7344689 | Silicon wafer for IGBT and method for producing same | Yasuhiro Oura, Koji Kato | 2008-03-18 |
| 7288791 | Epitaxial wafer and method for manufacturing method | Satoshi Murakami, Hirotaka Fujii | 2007-10-30 |
| 7014704 | Method for growing silicon single crystal | Toshiaki Ono, Tadami Tanaka, Eiichi Asayama, Hideshi Nishikawa | 2006-03-21 |
| 6641888 | Silicon single crystal, silicon wafer, and epitaxial wafer. | Eiichi Asayama, Masataka Horai, Shinsuke Sadamitsu, Yasuo Koike, Kouji Sueoka +1 more | 2003-11-04 |
| 6365461 | Method of manufacturing epitaxial wafer | Eiichi Asayama, Masataka Hourai | 2002-04-02 |